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      <a id="monitor"></a>
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      <a id="IndexMonitor" class="indexterm"></a>
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        <h2>
          <span class="refentrytitle">monitor</span>
        </h2>
        <p>monitor — 
      Returns the audio spout frame.
          </p>
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      <div class="refsect1">
        <a id="idp126255888"></a>
        <h2>Description</h2>
        <p>
      Returns the audio spout frame (if active), otherwise it returns zero.
    </p>
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      <div class="refsect1">
        <a id="idp126257136"></a>
        <h2>Syntax</h2>
        <pre class="synopsis">aout1 [,aout2 ... aoutX] <span class="command"><strong>monitor</strong></span></pre>
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      <div class="refsect1">
        <a id="idp126259200"></a>
        <h2>Performance</h2>
        <p>
      This opcode can be used for monitoring the output signal from csound. It should not be used for processing the signal further.
    </p>
        <p>
      See the entry for the <a class="link" href="fout.html" title="fout"><em class="citetitle">fout</em></a> opcode for an example of usage of <span class="emphasis"><em>monitor</em></span>.
    </p>
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      <div class="refsect1">
        <a id="idp126262400"></a>
        <h2>Examples</h2>
        <p>
      Here is an example of the monitor opcode. It uses the file <a class="ulink" href="examples/monitor.csd" target="_top"><em class="citetitle">monitor.csd</em></a>.
      </p>
        <div class="example">
          <a id="idp126264176"></a>
          <p class="title">
            <strong>Example 523. Example of the monitor opcode.</strong>
          </p>
          <div class="example-contents">
            <p>See the sections <a class="link" href="UsingRealTime.html" title="Real-Time Audio"><em class="citetitle">Real-time Audio</em></a> and <a class="link" href="CommandFlags.html" title="Csound command line"><em class="citetitle">Command Line Flags</em></a> for more information on using command line flags.</p>
            <pre class="programlisting">
<span class="csdtag">&lt;CsoundSynthesizer&gt;</span>
<span class="csdtag">&lt;CsOptions&gt;</span>
<span class="comment">; Select audio/midi flags here according to platform</span>
-odac     <span class="comment">;;;realtime audio out</span>
<span class="comment">;-iadc    ;;;uncomment -iadc if realtime audio input is needed too</span>
<span class="comment">; For Non-realtime ouput leave only the line below:</span>
<span class="comment">; -o monitor.wav -W ;;; for file output any platform</span>
<span class="csdtag">&lt;/CsOptions&gt;</span>
<span class="csdtag">&lt;CsInstruments&gt;</span>

<span class="ohdr">sr</span> <span class="op">=</span> 44100
<span class="ohdr">ksmps</span> <span class="op">=</span> 32
<span class="ohdr">nchnls</span> <span class="op">=</span> 2
<span class="ohdr">0dbfs</span>  <span class="op">=</span> 1

giSine <span class="ohdr">ftgen</span> 0, 0, 2^10, 10, 1

<span class="oblock">instr</span> 1

asig <span class="opc">poscil3</span> .5, 880, giSine
<span class="comment">;write a raw file: 32 bits with header</span>
     <span class="opc">fout</span> "fout_880.wav", 15, asig	
     <span class="opc">outs</span> asig, asig

<span class="oblock">endin</span>

<span class="oblock">instr</span> 2

klfo <span class="opc">lfo</span> 1, 2, 0
asig <span class="opc">poscil3</span> .5<span class="op">*</span>klfo, 220, giSine
<span class="comment">;write an aiff file: 32 bits with header</span>
     <span class="opc">fout</span> "fout_aif.aiff", 25, asig	
<span class="comment">;        fout "fout_all3.wav", 14, asig</span>
     <span class="opc">outs</span> asig, asig

<span class="oblock">endin</span>

<span class="oblock">instr</span> 99 <span class="comment">;read the stereo csound output buffer</span>

allL, allR <span class="opc">monitor</span>
<span class="comment">;write the output of csound to an audio file</span>
<span class="comment">;to a wav file: 16 bits with header</span>
           <span class="opc">fout</span> "fout_all.wav", 14, allL, allR

<span class="oblock">endin</span>
<span class="csdtag">&lt;/CsInstruments&gt;</span>
<span class="csdtag">&lt;CsScore&gt;</span>

<span class="stamnt">i</span> 1 0 2
<span class="stamnt">i</span> 2 0 3
<span class="stamnt">i</span> 99 0 3
<span class="stamnt">e</span>
<span class="csdtag">&lt;/CsScore&gt;</span>
<span class="csdtag">&lt;/CsoundSynthesizer&gt;</span>
</pre>
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        <p><br class="example-break" />
    </p>
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      <div class="refsect1">
        <a id="idp126268464"></a>
        <h2>See also</h2>
        <p>
      <a class="link" href="fout.html" title="fout"><em class="citetitle">fout</em></a>, 
      the <a class="link" href="MixerOpcodes.html" title="Mixer Opcodes"><em class="citetitle">Mixer opcodes</em></a> and the <a class="link" href="ZakTop.html" title="Zak Patch System"><em class="citetitle">Zak Patching System</em></a>.
    </p>
      </div>
      <div class="refsect1">
        <a id="idp126272656"></a>
        <h2>Credits</h2>
        <p>Istvan Varga 2006</p>
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